/u/sumguysr's posts
How many candles would need to burn in a room (let's say 10 by 10 by 10ft) to pose a risk of oxygen depletion to humans?
Mark as read: Add to a list
Does the prevalence of mercury in coal deposits indicate that the ancient seas which produced them had high mercury levels? Was mercury once prevalent in the biosphere long prior to human intervention?
Mark as read: Add to a list
Mark as read: Add to a list